./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 71774aeec0d0f8840a1b18b633767b26c38c9eb9d26569d28cdf01c44c9881ac --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:59:32,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:59:32,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:59:32,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:59:32,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:59:32,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:59:32,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:59:32,906 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:59:32,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:59:32,910 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:59:32,911 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:59:32,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:59:32,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:59:32,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:59:32,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:59:32,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:59:32,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:59:32,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:59:32,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:59:32,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:59:32,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:59:32,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:59:32,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:59:32,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:59:32,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:59:32,962 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:59:32,963 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:59:32,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:59:32,965 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:59:32,967 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:59:32,967 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:59:32,968 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:59:32,969 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:59:32,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:59:32,971 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:59:32,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:59:32,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:59:32,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:59:32,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:59:32,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:59:32,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:59:32,975 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 13:59:33,021 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:59:33,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:59:33,024 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:59:33,024 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:59:33,025 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:59:33,025 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:59:33,025 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:59:33,026 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:59:33,026 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:59:33,026 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:59:33,027 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:59:33,028 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:59:33,028 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:59:33,028 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:59:33,029 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:59:33,029 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:59:33,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:59:33,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:59:33,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:59:33,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:59:33,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:59:33,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:59:33,032 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:59:33,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:59:33,032 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:59:33,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:59:33,033 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:59:33,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:59:33,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:59:33,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:59:33,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:59:33,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:59:33,037 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:59:33,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:59:33,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:59:33,038 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:59:33,038 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:59:33,038 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71774aeec0d0f8840a1b18b633767b26c38c9eb9d26569d28cdf01c44c9881ac [2021-11-19 13:59:33,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:59:33,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:59:33,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:59:33,357 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:59:33,358 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:59:33,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2021-11-19 13:59:33,427 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/data/b76c89ca9/95918ef246fa45d895662b48b14cae00/FLAG4ed16ded9 [2021-11-19 13:59:34,371 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:59:34,373 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2021-11-19 13:59:34,427 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/data/b76c89ca9/95918ef246fa45d895662b48b14cae00/FLAG4ed16ded9 [2021-11-19 13:59:34,756 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/data/b76c89ca9/95918ef246fa45d895662b48b14cae00 [2021-11-19 13:59:34,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:59:34,760 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:59:34,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:59:34,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:59:34,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:59:34,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:59:34" (1/1) ... [2021-11-19 13:59:34,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24d52f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:34, skipping insertion in model container [2021-11-19 13:59:34,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:59:34" (1/1) ... [2021-11-19 13:59:34,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:59:34,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:59:35,248 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4496,4509] [2021-11-19 13:59:35,256 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4556,4569] [2021-11-19 13:59:35,281 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:59:35,287 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:59:36,240 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:36,241 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:36,242 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:36,243 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:36,245 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:36,263 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:36,263 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:36,266 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:36,267 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:36,269 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:36,271 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:36,272 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:36,272 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:36,743 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:59:36,745 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:59:36,749 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:59:36,750 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:59:36,753 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:59:36,754 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:59:36,756 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:59:36,766 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:59:36,768 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:59:36,769 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:59:37,009 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:59:37,055 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,067 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,158 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,159 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,159 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,160 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,160 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,191 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,191 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,192 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,192 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,192 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,193 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,193 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,193 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,198 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,199 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,200 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,200 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,207 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,208 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,239 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,240 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,240 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,287 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:59:37,317 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 13:59:37,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1459c028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:37, skipping insertion in model container [2021-11-19 13:59:37,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:59:37,318 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:59:37,320 INFO L158 Benchmark]: Toolchain (without parser) took 2558.96ms. Allocated memory was 90.2MB in the beginning and 127.9MB in the end (delta: 37.7MB). Free memory was 63.9MB in the beginning and 89.8MB in the end (delta: -25.9MB). Peak memory consumption was 47.3MB. Max. memory is 16.1GB. [2021-11-19 13:59:37,320 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 90.2MB. Free memory is still 69.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:59:37,321 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2556.54ms. Allocated memory was 90.2MB in the beginning and 127.9MB in the end (delta: 37.7MB). Free memory was 63.7MB in the beginning and 89.8MB in the end (delta: -26.1MB). Peak memory consumption was 47.3MB. Max. memory is 16.1GB. [2021-11-19 13:59:37,323 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 90.2MB. Free memory is still 69.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2556.54ms. Allocated memory was 90.2MB in the beginning and 127.9MB in the end (delta: 37.7MB). Free memory was 63.7MB in the beginning and 89.8MB in the end (delta: -26.1MB). Peak memory consumption was 47.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7039]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 71774aeec0d0f8840a1b18b633767b26c38c9eb9d26569d28cdf01c44c9881ac --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:59:39,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:59:39,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:59:39,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:59:39,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:59:39,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:59:39,879 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:59:39,882 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:59:39,885 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:59:39,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:59:39,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:59:39,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:59:39,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:59:39,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:59:39,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:59:39,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:59:39,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:59:39,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:59:39,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:59:39,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:59:39,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:59:39,924 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:59:39,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:59:39,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:59:39,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:59:39,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:59:39,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:59:39,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:59:39,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:59:39,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:59:39,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:59:39,946 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:59:39,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:59:39,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:59:39,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:59:39,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:59:39,952 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:59:39,952 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:59:39,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:59:39,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:59:39,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:59:39,960 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 13:59:40,010 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:59:40,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:59:40,012 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:59:40,012 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:59:40,013 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:59:40,013 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:59:40,013 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:59:40,013 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:59:40,013 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:59:40,014 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:59:40,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:59:40,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:59:40,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:59:40,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:59:40,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:59:40,018 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:59:40,018 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:59:40,018 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:59:40,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:59:40,019 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:59:40,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:59:40,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:59:40,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:59:40,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:59:40,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:59:40,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:59:40,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:59:40,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:59:40,021 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:59:40,021 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:59:40,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:59:40,021 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:59:40,022 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:59:40,022 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71774aeec0d0f8840a1b18b633767b26c38c9eb9d26569d28cdf01c44c9881ac [2021-11-19 13:59:40,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:59:40,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:59:40,434 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:59:40,435 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:59:40,436 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:59:40,437 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2021-11-19 13:59:40,519 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/data/4ef992b01/10274fd13b9c46cc9668da05ff53bef6/FLAGca1b4b25c [2021-11-19 13:59:41,541 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:59:41,542 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2021-11-19 13:59:41,589 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/data/4ef992b01/10274fd13b9c46cc9668da05ff53bef6/FLAGca1b4b25c [2021-11-19 13:59:42,030 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/data/4ef992b01/10274fd13b9c46cc9668da05ff53bef6 [2021-11-19 13:59:42,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:59:42,035 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:59:42,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:59:42,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:59:42,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:59:42,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:59:42" (1/1) ... [2021-11-19 13:59:42,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6830b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:42, skipping insertion in model container [2021-11-19 13:59:42,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:59:42" (1/1) ... [2021-11-19 13:59:42,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:59:42,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:59:42,462 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4496,4509] [2021-11-19 13:59:42,468 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4556,4569] [2021-11-19 13:59:42,488 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:59:42,495 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:59:43,517 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:43,518 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:43,519 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:43,520 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:43,522 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:43,541 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:43,542 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:43,544 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:43,545 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:43,548 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:43,549 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:43,550 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:43,551 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:43,989 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:59:43,990 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:59:43,992 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:59:43,993 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:59:43,995 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:59:43,995 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:59:43,996 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:59:43,997 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:59:43,998 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:59:43,998 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:59:44,191 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:59:44,256 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,271 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,383 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,386 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,389 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,390 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,390 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,391 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,392 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,393 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,393 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,393 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,394 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,394 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,396 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,401 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,402 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,402 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,403 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,413 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,414 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,430 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,432 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,433 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,459 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:59:44,504 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:59:44,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:59:44,554 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4496,4509] [2021-11-19 13:59:44,554 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4556,4569] [2021-11-19 13:59:44,556 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:59:44,557 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:59:44,606 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,607 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,607 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,608 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,608 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,615 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,616 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,617 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,618 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,619 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,620 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,620 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,621 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,657 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:59:44,658 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:59:44,658 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:59:44,661 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:59:44,662 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:59:44,664 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:59:44,664 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:59:44,666 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:59:44,667 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:59:44,668 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:59:44,721 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:59:44,737 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,743 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,782 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,782 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,783 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,783 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,784 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,784 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,785 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,785 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,786 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,786 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,786 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,787 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,787 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,788 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,788 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,789 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,789 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,792 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,792 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,799 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,800 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,800 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,808 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:59:44,824 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:59:44,838 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4496,4509] [2021-11-19 13:59:44,840 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4556,4569] [2021-11-19 13:59:44,842 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:59:44,851 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:59:44,901 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,902 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,902 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,902 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,903 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,941 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,942 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,944 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,944 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,945 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,946 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,946 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,947 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,991 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:59:44,992 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:59:44,993 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:59:44,993 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:59:44,994 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:59:44,995 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:59:44,996 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:59:44,996 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:59:44,997 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:59:44,998 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:59:45,036 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:59:45,054 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,059 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,091 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,092 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,092 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,092 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,093 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,093 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,094 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,094 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,095 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,095 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,112 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,114 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,117 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,118 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,119 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,119 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,120 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,123 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,124 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,130 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,132 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,140 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,159 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:59:45,624 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:59:45,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:45 WrapperNode [2021-11-19 13:59:45,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:59:45,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:59:45,626 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:59:45,626 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:59:45,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:45" (1/1) ... [2021-11-19 13:59:45,791 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:45" (1/1) ... [2021-11-19 13:59:45,906 INFO L137 Inliner]: procedures = 719, calls = 1920, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 1012 [2021-11-19 13:59:45,907 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:59:45,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:59:45,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:59:45,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:59:45,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:45" (1/1) ... [2021-11-19 13:59:45,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:45" (1/1) ... [2021-11-19 13:59:45,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:45" (1/1) ... [2021-11-19 13:59:45,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:45" (1/1) ... [2021-11-19 13:59:46,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:45" (1/1) ... [2021-11-19 13:59:46,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:45" (1/1) ... [2021-11-19 13:59:46,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:45" (1/1) ... [2021-11-19 13:59:46,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:59:46,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:59:46,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:59:46,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:59:46,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:45" (1/1) ... [2021-11-19 13:59:46,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:59:46,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:59:46,166 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:59:46,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:59:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2021-11-19 13:59:46,219 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2021-11-19 13:59:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-11-19 13:59:46,219 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-11-19 13:59:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:59:46,220 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-19 13:59:46,220 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-19 13:59:46,220 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-19 13:59:46,220 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-19 13:59:46,220 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 13:59:46,220 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 13:59:46,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:59:46,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 13:59:46,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 13:59:46,221 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2021-11-19 13:59:46,221 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2021-11-19 13:59:46,221 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-19 13:59:46,221 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-19 13:59:46,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 13:59:46,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 13:59:46,221 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2021-11-19 13:59:46,222 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2021-11-19 13:59:46,222 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-19 13:59:46,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-19 13:59:46,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 13:59:46,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:59:46,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 13:59:46,224 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2021-11-19 13:59:46,224 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2021-11-19 13:59:46,224 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-19 13:59:46,224 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-19 13:59:46,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:59:46,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:59:46,224 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 13:59:46,224 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 13:59:46,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 13:59:46,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 13:59:46,225 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-19 13:59:46,225 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-19 13:59:46,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 13:59:46,225 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-19 13:59:46,226 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-19 13:59:46,226 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-11-19 13:59:46,226 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-11-19 13:59:46,226 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-11-19 13:59:46,226 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-11-19 13:59:46,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 13:59:46,227 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 13:59:46,227 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 13:59:46,227 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 13:59:46,228 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-19 13:59:46,228 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-19 13:59:46,228 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2021-11-19 13:59:46,228 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2021-11-19 13:59:46,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:59:46,228 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-19 13:59:46,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 13:59:46,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 13:59:46,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 13:59:46,229 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2021-11-19 13:59:46,229 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2021-11-19 13:59:46,229 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-19 13:59:46,229 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-19 13:59:46,229 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-19 13:59:46,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-19 13:59:46,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 13:59:46,230 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-19 13:59:46,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-19 13:59:46,230 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2021-11-19 13:59:46,230 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2021-11-19 13:59:46,230 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2021-11-19 13:59:46,230 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2021-11-19 13:59:46,690 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:59:46,692 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:59:52,323 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:59:52,344 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:59:52,344 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-19 13:59:52,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:59:52 BoogieIcfgContainer [2021-11-19 13:59:52,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:59:52,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:59:52,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:59:52,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:59:52,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:59:42" (1/3) ... [2021-11-19 13:59:52,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@515a9036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:59:52, skipping insertion in model container [2021-11-19 13:59:52,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:45" (2/3) ... [2021-11-19 13:59:52,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@515a9036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:59:52, skipping insertion in model container [2021-11-19 13:59:52,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:59:52" (3/3) ... [2021-11-19 13:59:52,371 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_pop_harness.i [2021-11-19 13:59:52,381 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:59:52,383 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 13:59:52,443 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:59:52,450 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 13:59:52,450 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-19 13:59:52,480 INFO L276 IsEmpty]: Start isEmpty. Operand has 444 states, 259 states have (on average 1.2664092664092663) internal successors, (328), 262 states have internal predecessors, (328), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) [2021-11-19 13:59:52,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-19 13:59:52,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:52,499 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:52,499 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:59:52,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:52,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1834595556, now seen corresponding path program 1 times [2021-11-19 13:59:52,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:59:52,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667584727] [2021-11-19 13:59:52,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:52,534 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:59:52,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:59:52,537 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:59:52,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:59:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:53,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 1371 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 13:59:53,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:59:53,833 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-19 13:59:53,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:59:54,214 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-11-19 13:59:54,215 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:59:54,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667584727] [2021-11-19 13:59:54,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667584727] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:59:54,216 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:59:54,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 13:59:54,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711716234] [2021-11-19 13:59:54,220 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:54,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 13:59:54,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:59:54,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 13:59:54,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:59:54,272 INFO L87 Difference]: Start difference. First operand has 444 states, 259 states have (on average 1.2664092664092663) internal successors, (328), 262 states have internal predecessors, (328), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 13:59:54,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:54,430 INFO L93 Difference]: Finished difference Result 875 states and 1391 transitions. [2021-11-19 13:59:54,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 13:59:54,432 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 133 [2021-11-19 13:59:54,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:54,458 INFO L225 Difference]: With dead ends: 875 [2021-11-19 13:59:54,458 INFO L226 Difference]: Without dead ends: 437 [2021-11-19 13:59:54,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:59:54,477 INFO L933 BasicCegarLoop]: 629 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:54,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:59:54,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2021-11-19 13:59:54,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2021-11-19 13:59:54,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 253 states have (on average 1.2411067193675889) internal successors, (314), 256 states have internal predecessors, (314), 156 states have call successors, (156), 27 states have call predecessors, (156), 26 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) [2021-11-19 13:59:54,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 624 transitions. [2021-11-19 13:59:54,578 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 624 transitions. Word has length 133 [2021-11-19 13:59:54,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:54,580 INFO L470 AbstractCegarLoop]: Abstraction has 437 states and 624 transitions. [2021-11-19 13:59:54,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 13:59:54,580 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 624 transitions. [2021-11-19 13:59:54,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-19 13:59:54,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:54,586 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:54,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:59:54,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:59:54,800 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:59:54,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:54,801 INFO L85 PathProgramCache]: Analyzing trace with hash 133133086, now seen corresponding path program 1 times [2021-11-19 13:59:54,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:59:54,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [335113660] [2021-11-19 13:59:54,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:54,805 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:59:54,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:59:54,807 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:59:54,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:59:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:55,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 1371 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:59:55,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:59:56,427 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-19 13:59:56,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:59:57,011 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2021-11-19 13:59:57,011 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:59:57,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [335113660] [2021-11-19 13:59:57,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [335113660] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:59:57,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:59:57,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2021-11-19 13:59:57,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37576036] [2021-11-19 13:59:57,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:57,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:59:57,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:59:57,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:59:57,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:59:57,015 INFO L87 Difference]: Start difference. First operand 437 states and 624 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-19 13:59:59,315 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:59:59,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:59,843 INFO L93 Difference]: Finished difference Result 840 states and 1217 transitions. [2021-11-19 13:59:59,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:59:59,847 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 133 [2021-11-19 13:59:59,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:59,854 INFO L225 Difference]: With dead ends: 840 [2021-11-19 13:59:59,855 INFO L226 Difference]: Without dead ends: 439 [2021-11-19 13:59:59,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:59:59,869 INFO L933 BasicCegarLoop]: 599 mSDtfsCounter, 35 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 2312 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:59,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 2312 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2021-11-19 13:59:59,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-11-19 13:59:59,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2021-11-19 13:59:59,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 254 states have (on average 1.2401574803149606) internal successors, (315), 258 states have internal predecessors, (315), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (168), 154 states have call predecessors, (168), 154 states have call successors, (168) [2021-11-19 13:59:59,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 639 transitions. [2021-11-19 13:59:59,949 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 639 transitions. Word has length 133 [2021-11-19 13:59:59,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:59,950 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 639 transitions. [2021-11-19 13:59:59,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-19 13:59:59,951 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 639 transitions. [2021-11-19 13:59:59,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-19 13:59:59,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:59,955 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:59,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:00,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:00,180 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:00:00,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:00,180 INFO L85 PathProgramCache]: Analyzing trace with hash 74249020, now seen corresponding path program 1 times [2021-11-19 14:00:00,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:00,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116935852] [2021-11-19 14:00:00,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:00,183 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:00,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:00,185 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:00,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:00:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:01,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 1401 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:00:01,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:01,945 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-19 14:00:01,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:02,963 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-11-19 14:00:02,964 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:02,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116935852] [2021-11-19 14:00:02,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1116935852] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:00:02,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:00:02,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2021-11-19 14:00:02,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043284046] [2021-11-19 14:00:02,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:02,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:00:02,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:02,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:00:02,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:00:02,967 INFO L87 Difference]: Start difference. First operand 439 states and 639 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-19 14:00:05,754 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:00:07,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:07,012 INFO L93 Difference]: Finished difference Result 863 states and 1290 transitions. [2021-11-19 14:00:07,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:00:07,014 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 141 [2021-11-19 14:00:07,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:07,021 INFO L225 Difference]: With dead ends: 863 [2021-11-19 14:00:07,021 INFO L226 Difference]: Without dead ends: 460 [2021-11-19 14:00:07,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:00:07,026 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 87 mSDsluCounter, 2761 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 3338 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:07,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 3338 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 336 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2021-11-19 14:00:07,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-11-19 14:00:07,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 458. [2021-11-19 14:00:07,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 270 states have (on average 1.2481481481481482) internal successors, (337), 274 states have internal predecessors, (337), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (187), 157 states have call predecessors, (187), 156 states have call successors, (187) [2021-11-19 14:00:07,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 682 transitions. [2021-11-19 14:00:07,069 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 682 transitions. Word has length 141 [2021-11-19 14:00:07,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:07,070 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 682 transitions. [2021-11-19 14:00:07,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-19 14:00:07,070 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 682 transitions. [2021-11-19 14:00:07,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-19 14:00:07,074 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:07,074 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:00:07,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:07,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:07,287 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:00:07,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:07,288 INFO L85 PathProgramCache]: Analyzing trace with hash -782989412, now seen corresponding path program 1 times [2021-11-19 14:00:07,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:07,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258039930] [2021-11-19 14:00:07,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:07,290 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:07,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:07,291 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:07,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:00:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:08,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:00:08,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:09,117 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-19 14:00:09,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:10,049 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-11-19 14:00:10,050 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:10,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258039930] [2021-11-19 14:00:10,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258039930] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:00:10,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:00:10,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2021-11-19 14:00:10,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955036932] [2021-11-19 14:00:10,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:10,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:00:10,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:10,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:00:10,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:00:10,052 INFO L87 Difference]: Start difference. First operand 458 states and 682 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-19 14:00:12,650 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:00:13,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:13,655 INFO L93 Difference]: Finished difference Result 888 states and 1365 transitions. [2021-11-19 14:00:13,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:00:13,656 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 156 [2021-11-19 14:00:13,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:13,663 INFO L225 Difference]: With dead ends: 888 [2021-11-19 14:00:13,663 INFO L226 Difference]: Without dead ends: 466 [2021-11-19 14:00:13,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:00:13,669 INFO L933 BasicCegarLoop]: 593 mSDtfsCounter, 58 mSDsluCounter, 2260 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 2853 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:13,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 2853 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 254 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2021-11-19 14:00:13,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2021-11-19 14:00:13,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 458. [2021-11-19 14:00:13,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 270 states have (on average 1.2481481481481482) internal successors, (337), 274 states have internal predecessors, (337), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (187), 157 states have call predecessors, (187), 156 states have call successors, (187) [2021-11-19 14:00:13,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 682 transitions. [2021-11-19 14:00:13,710 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 682 transitions. Word has length 156 [2021-11-19 14:00:13,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:13,711 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 682 transitions. [2021-11-19 14:00:13,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-19 14:00:13,712 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 682 transitions. [2021-11-19 14:00:13,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-19 14:00:13,715 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:13,715 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:00:13,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:13,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:13,940 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:00:13,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:13,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1549701389, now seen corresponding path program 1 times [2021-11-19 14:00:13,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:13,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074002244] [2021-11-19 14:00:13,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:13,942 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:13,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:13,943 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:13,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:00:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:15,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 1529 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:00:15,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:16,077 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-11-19 14:00:16,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:17,357 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-11-19 14:00:17,357 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:17,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074002244] [2021-11-19 14:00:17,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074002244] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:00:17,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:00:17,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 11 [2021-11-19 14:00:17,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466981350] [2021-11-19 14:00:17,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:17,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:00:17,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:17,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:00:17,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:00:17,359 INFO L87 Difference]: Start difference. First operand 458 states and 682 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2021-11-19 14:00:20,732 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:00:22,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:22,578 INFO L93 Difference]: Finished difference Result 910 states and 1384 transitions. [2021-11-19 14:00:22,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:00:22,579 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) Word has length 172 [2021-11-19 14:00:22,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:22,585 INFO L225 Difference]: With dead ends: 910 [2021-11-19 14:00:22,586 INFO L226 Difference]: Without dead ends: 488 [2021-11-19 14:00:22,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:00:22,591 INFO L933 BasicCegarLoop]: 578 mSDtfsCounter, 130 mSDsluCounter, 3305 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 3883 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:22,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 3883 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 569 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2021-11-19 14:00:22,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-11-19 14:00:22,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 470. [2021-11-19 14:00:22,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 280 states have (on average 1.2535714285714286) internal successors, (351), 284 states have internal predecessors, (351), 159 states have call successors, (159), 28 states have call predecessors, (159), 29 states have return successors, (188), 158 states have call predecessors, (188), 157 states have call successors, (188) [2021-11-19 14:00:22,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 698 transitions. [2021-11-19 14:00:22,638 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 698 transitions. Word has length 172 [2021-11-19 14:00:22,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:22,640 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 698 transitions. [2021-11-19 14:00:22,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2021-11-19 14:00:22,640 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 698 transitions. [2021-11-19 14:00:22,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-19 14:00:22,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:22,645 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:00:22,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:22,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:22,867 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:00:22,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:22,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1969354101, now seen corresponding path program 2 times [2021-11-19 14:00:22,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:22,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [660459918] [2021-11-19 14:00:22,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:00:22,871 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:22,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:22,873 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:22,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:00:30,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:00:30,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:00:30,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 1609 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:00:30,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:31,820 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-19 14:00:31,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:32,834 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-11-19 14:00:32,834 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:32,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [660459918] [2021-11-19 14:00:32,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [660459918] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:00:32,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:00:32,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2021-11-19 14:00:32,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317842213] [2021-11-19 14:00:32,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:32,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:00:32,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:32,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:00:32,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:00:32,837 INFO L87 Difference]: Start difference. First operand 470 states and 698 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-19 14:00:37,983 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:00:39,998 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:00:42,004 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:00:44,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:44,930 INFO L93 Difference]: Finished difference Result 940 states and 1458 transitions. [2021-11-19 14:00:44,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:00:44,933 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 187 [2021-11-19 14:00:44,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:44,939 INFO L225 Difference]: With dead ends: 940 [2021-11-19 14:00:44,940 INFO L226 Difference]: Without dead ends: 506 [2021-11-19 14:00:44,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:00:44,945 INFO L933 BasicCegarLoop]: 635 mSDtfsCounter, 21 mSDsluCounter, 2319 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2954 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:44,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 2954 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 254 Invalid, 3 Unknown, 0 Unchecked, 11.4s Time] [2021-11-19 14:00:44,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-11-19 14:00:44,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 478. [2021-11-19 14:00:44,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 288 states have (on average 1.2534722222222223) internal successors, (361), 292 states have internal predecessors, (361), 159 states have call successors, (159), 28 states have call predecessors, (159), 29 states have return successors, (188), 158 states have call predecessors, (188), 157 states have call successors, (188) [2021-11-19 14:00:44,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 708 transitions. [2021-11-19 14:00:44,978 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 708 transitions. Word has length 187 [2021-11-19 14:00:44,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:44,978 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 708 transitions. [2021-11-19 14:00:44,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-19 14:00:44,979 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 708 transitions. [2021-11-19 14:00:44,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-19 14:00:44,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:44,982 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:00:45,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:45,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:45,196 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:00:45,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:45,196 INFO L85 PathProgramCache]: Analyzing trace with hash -402596151, now seen corresponding path program 1 times [2021-11-19 14:00:45,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:45,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758445829] [2021-11-19 14:00:45,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:45,198 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:45,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:45,199 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:45,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:00:46,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:46,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 1607 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:00:46,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:48,098 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-19 14:00:48,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:49,228 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-11-19 14:00:49,229 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:49,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758445829] [2021-11-19 14:00:49,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758445829] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:00:49,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:00:49,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2021-11-19 14:00:49,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344447370] [2021-11-19 14:00:49,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:49,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:00:49,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:49,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:00:49,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:00:49,231 INFO L87 Difference]: Start difference. First operand 478 states and 708 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-19 14:00:54,235 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:00:56,265 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:00:58,296 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:01:01,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:01,364 INFO L93 Difference]: Finished difference Result 950 states and 1468 transitions. [2021-11-19 14:01:01,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:01:01,368 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 187 [2021-11-19 14:01:01,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:01,374 INFO L225 Difference]: With dead ends: 950 [2021-11-19 14:01:01,374 INFO L226 Difference]: Without dead ends: 508 [2021-11-19 14:01:01,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:01:01,380 INFO L933 BasicCegarLoop]: 633 mSDtfsCounter, 17 mSDsluCounter, 2941 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 3574 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:01,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 3574 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 271 Invalid, 3 Unknown, 0 Unchecked, 11.2s Time] [2021-11-19 14:01:01,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-11-19 14:01:01,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 482. [2021-11-19 14:01:01,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 292 states have (on average 1.25) internal successors, (365), 296 states have internal predecessors, (365), 159 states have call successors, (159), 28 states have call predecessors, (159), 29 states have return successors, (188), 158 states have call predecessors, (188), 157 states have call successors, (188) [2021-11-19 14:01:01,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 712 transitions. [2021-11-19 14:01:01,412 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 712 transitions. Word has length 187 [2021-11-19 14:01:01,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:01,413 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 712 transitions. [2021-11-19 14:01:01,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-19 14:01:01,414 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 712 transitions. [2021-11-19 14:01:01,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-19 14:01:01,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:01,417 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:01,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:01,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:01,640 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:01:01,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:01,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1545098617, now seen corresponding path program 1 times [2021-11-19 14:01:01,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:01,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437871234] [2021-11-19 14:01:01,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:01,642 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:01,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:01,643 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:01,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:01:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:02,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 1604 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 14:01:02,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:11,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2021-11-19 14:01:11,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-19 14:01:12,355 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-19 14:01:12,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:17,436 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:01:17,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-19 14:01:17,511 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-19 14:01:17,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-19 14:01:17,961 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2021-11-19 14:01:17,962 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:17,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1437871234] [2021-11-19 14:01:17,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1437871234] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:01:17,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:01:17,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 13 [2021-11-19 14:01:17,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401672727] [2021-11-19 14:01:17,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:17,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:01:17,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:17,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:01:17,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:01:17,965 INFO L87 Difference]: Start difference. First operand 482 states and 712 transitions. Second operand has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 6 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) [2021-11-19 14:01:32,658 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:01:34,666 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:01:36,673 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:01:40,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:40,579 INFO L93 Difference]: Finished difference Result 964 states and 1483 transitions. [2021-11-19 14:01:40,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:01:40,581 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 6 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) Word has length 187 [2021-11-19 14:01:40,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:40,588 INFO L225 Difference]: With dead ends: 964 [2021-11-19 14:01:40,588 INFO L226 Difference]: Without dead ends: 545 [2021-11-19 14:01:40,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 359 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=83, Invalid=293, Unknown=4, NotChecked=0, Total=380 [2021-11-19 14:01:40,592 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 88 mSDsluCounter, 3965 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 11 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 4574 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 162 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:40,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 4574 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 615 Invalid, 3 Unknown, 162 Unchecked, 11.5s Time] [2021-11-19 14:01:40,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-11-19 14:01:40,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 519. [2021-11-19 14:01:40,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 319 states have (on average 1.2413793103448276) internal successors, (396), 323 states have internal predecessors, (396), 164 states have call successors, (164), 32 states have call predecessors, (164), 34 states have return successors, (208), 164 states have call predecessors, (208), 162 states have call successors, (208) [2021-11-19 14:01:40,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 768 transitions. [2021-11-19 14:01:40,632 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 768 transitions. Word has length 187 [2021-11-19 14:01:40,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:40,633 INFO L470 AbstractCegarLoop]: Abstraction has 519 states and 768 transitions. [2021-11-19 14:01:40,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 6 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) [2021-11-19 14:01:40,633 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 768 transitions. [2021-11-19 14:01:40,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-19 14:01:40,637 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:40,637 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:40,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:40,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:40,860 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:01:40,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:40,860 INFO L85 PathProgramCache]: Analyzing trace with hash 446482249, now seen corresponding path program 1 times [2021-11-19 14:01:40,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:40,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839689891] [2021-11-19 14:01:40,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:40,862 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:40,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:40,863 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:40,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:01:42,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:42,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 1606 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:01:42,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:42,913 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-19 14:01:42,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:43,493 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-11-19 14:01:43,494 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:43,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839689891] [2021-11-19 14:01:43,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839689891] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:01:43,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:01:43,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-19 14:01:43,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574888334] [2021-11-19 14:01:43,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:43,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:01:43,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:43,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:01:43,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:01:43,496 INFO L87 Difference]: Start difference. First operand 519 states and 768 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-19 14:01:43,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:43,724 INFO L93 Difference]: Finished difference Result 997 states and 1547 transitions. [2021-11-19 14:01:43,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:01:43,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 187 [2021-11-19 14:01:43,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:43,731 INFO L225 Difference]: With dead ends: 997 [2021-11-19 14:01:43,732 INFO L226 Difference]: Without dead ends: 539 [2021-11-19 14:01:43,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:01:43,737 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 8 mSDsluCounter, 1917 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2564 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:43,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 2564 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:01:43,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-11-19 14:01:43,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 527. [2021-11-19 14:01:43,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 327 states have (on average 1.238532110091743) internal successors, (405), 331 states have internal predecessors, (405), 164 states have call successors, (164), 32 states have call predecessors, (164), 34 states have return successors, (208), 164 states have call predecessors, (208), 162 states have call successors, (208) [2021-11-19 14:01:43,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 777 transitions. [2021-11-19 14:01:43,773 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 777 transitions. Word has length 187 [2021-11-19 14:01:43,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:43,774 INFO L470 AbstractCegarLoop]: Abstraction has 527 states and 777 transitions. [2021-11-19 14:01:43,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-19 14:01:43,774 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 777 transitions. [2021-11-19 14:01:43,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-19 14:01:43,777 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:43,778 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:43,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:43,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:44,000 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:01:44,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:44,000 INFO L85 PathProgramCache]: Analyzing trace with hash 519703029, now seen corresponding path program 1 times [2021-11-19 14:01:44,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:44,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [475054216] [2021-11-19 14:01:44,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:44,002 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:44,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:44,003 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:44,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:01:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:45,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 1605 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:01:45,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:46,571 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-19 14:01:46,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:47,356 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2021-11-19 14:01:47,357 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:47,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [475054216] [2021-11-19 14:01:47,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [475054216] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:47,357 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:47,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-19 14:01:47,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257419586] [2021-11-19 14:01:47,357 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:47,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:01:47,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:47,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:01:47,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:01:47,359 INFO L87 Difference]: Start difference. First operand 527 states and 777 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 14:01:49,538 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:01:49,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:49,708 INFO L93 Difference]: Finished difference Result 984 states and 1472 transitions. [2021-11-19 14:01:49,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:01:49,709 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) Word has length 188 [2021-11-19 14:01:49,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:49,716 INFO L225 Difference]: With dead ends: 984 [2021-11-19 14:01:49,717 INFO L226 Difference]: Without dead ends: 547 [2021-11-19 14:01:49,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:01:49,721 INFO L933 BasicCegarLoop]: 625 mSDtfsCounter, 7 mSDsluCounter, 3112 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3737 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:49,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 3737 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 14:01:49,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-11-19 14:01:49,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 545. [2021-11-19 14:01:49,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 341 states have (on average 1.2375366568914956) internal successors, (422), 345 states have internal predecessors, (422), 166 states have call successors, (166), 32 states have call predecessors, (166), 36 states have return successors, (216), 168 states have call predecessors, (216), 164 states have call successors, (216) [2021-11-19 14:01:49,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 804 transitions. [2021-11-19 14:01:49,759 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 804 transitions. Word has length 188 [2021-11-19 14:01:49,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:49,760 INFO L470 AbstractCegarLoop]: Abstraction has 545 states and 804 transitions. [2021-11-19 14:01:49,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-19 14:01:49,761 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 804 transitions. [2021-11-19 14:01:49,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-19 14:01:49,764 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:49,764 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:49,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:49,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:49,987 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:01:49,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:49,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1395722035, now seen corresponding path program 1 times [2021-11-19 14:01:49,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:49,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725714479] [2021-11-19 14:01:49,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:49,991 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:49,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:49,992 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:50,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:01:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:51,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 14:01:51,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:52,576 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-19 14:01:52,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:53,686 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2021-11-19 14:01:53,686 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:53,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725714479] [2021-11-19 14:01:53,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725714479] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:01:53,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:01:53,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2021-11-19 14:01:53,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233237695] [2021-11-19 14:01:53,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:53,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:01:53,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:53,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:01:53,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:01:53,689 INFO L87 Difference]: Start difference. First operand 545 states and 804 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-19 14:01:56,233 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:01:58,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:58,190 INFO L93 Difference]: Finished difference Result 982 states and 1468 transitions. [2021-11-19 14:01:58,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:01:58,192 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 188 [2021-11-19 14:01:58,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:58,199 INFO L225 Difference]: With dead ends: 982 [2021-11-19 14:01:58,200 INFO L226 Difference]: Without dead ends: 530 [2021-11-19 14:01:58,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:01:58,204 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 8 mSDsluCounter, 4021 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4608 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:58,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 4608 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 398 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2021-11-19 14:01:58,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-11-19 14:01:58,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 530. [2021-11-19 14:01:58,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 329 states have (on average 1.2310030395136777) internal successors, (405), 334 states have internal predecessors, (405), 164 states have call successors, (164), 32 states have call predecessors, (164), 35 states have return successors, (210), 164 states have call predecessors, (210), 162 states have call successors, (210) [2021-11-19 14:01:58,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 779 transitions. [2021-11-19 14:01:58,242 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 779 transitions. Word has length 188 [2021-11-19 14:01:58,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:58,243 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 779 transitions. [2021-11-19 14:01:58,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-19 14:01:58,244 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 779 transitions. [2021-11-19 14:01:58,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-19 14:01:58,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:58,248 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:58,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:58,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:58,460 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:01:58,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:58,460 INFO L85 PathProgramCache]: Analyzing trace with hash -807170079, now seen corresponding path program 1 times [2021-11-19 14:01:58,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:58,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1637864176] [2021-11-19 14:01:58,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:58,462 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:58,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:58,463 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:58,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:02:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:00,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:02:00,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:01,053 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-19 14:02:01,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:02,029 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-11-19 14:02:02,029 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:02:02,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1637864176] [2021-11-19 14:02:02,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1637864176] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:02,030 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:02,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-11-19 14:02:02,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137998342] [2021-11-19 14:02:02,031 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:02,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:02:02,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:02:02,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:02:02,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:02:02,033 INFO L87 Difference]: Start difference. First operand 530 states and 779 transitions. Second operand has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 3 states have call predecessors, (31), 4 states have call successors, (31) [2021-11-19 14:02:04,427 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:02:05,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:05,430 INFO L93 Difference]: Finished difference Result 966 states and 1451 transitions. [2021-11-19 14:02:05,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:02:05,432 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 3 states have call predecessors, (31), 4 states have call successors, (31) Word has length 199 [2021-11-19 14:02:05,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:05,439 INFO L225 Difference]: With dead ends: 966 [2021-11-19 14:02:05,440 INFO L226 Difference]: Without dead ends: 532 [2021-11-19 14:02:05,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:02:05,444 INFO L933 BasicCegarLoop]: 592 mSDtfsCounter, 66 mSDsluCounter, 2246 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:05,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 2838 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 156 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2021-11-19 14:02:05,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-11-19 14:02:05,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 532. [2021-11-19 14:02:05,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 330 states have (on average 1.2303030303030302) internal successors, (406), 336 states have internal predecessors, (406), 164 states have call successors, (164), 32 states have call predecessors, (164), 36 states have return successors, (221), 164 states have call predecessors, (221), 162 states have call successors, (221) [2021-11-19 14:02:05,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 791 transitions. [2021-11-19 14:02:05,482 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 791 transitions. Word has length 199 [2021-11-19 14:02:05,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:05,482 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 791 transitions. [2021-11-19 14:02:05,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 3 states have call predecessors, (31), 4 states have call successors, (31) [2021-11-19 14:02:05,483 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 791 transitions. [2021-11-19 14:02:05,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-19 14:02:05,485 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:05,486 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:02:05,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 14:02:05,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:02:05,711 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:02:05,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:05,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1196534915, now seen corresponding path program 1 times [2021-11-19 14:02:05,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:02:05,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062446594] [2021-11-19 14:02:05,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:05,715 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:02:05,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:02:05,717 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:02:05,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 14:02:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:07,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 1657 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:02:07,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:08,522 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-19 14:02:08,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:10,148 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2021-11-19 14:02:10,148 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:02:10,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062446594] [2021-11-19 14:02:10,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062446594] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:02:10,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:02:10,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 10 [2021-11-19 14:02:10,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852753452] [2021-11-19 14:02:10,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:10,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:02:10,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:02:10,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:02:10,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:02:10,151 INFO L87 Difference]: Start difference. First operand 532 states and 791 transitions. Second operand has 8 states, 7 states have (on average 13.428571428571429) internal successors, (94), 8 states have internal predecessors, (94), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 5 states have call successors, (26) [2021-11-19 14:02:13,495 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:02:15,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:15,516 INFO L93 Difference]: Finished difference Result 998 states and 1512 transitions. [2021-11-19 14:02:15,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:02:15,517 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.428571428571429) internal successors, (94), 8 states have internal predecessors, (94), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 5 states have call successors, (26) Word has length 207 [2021-11-19 14:02:15,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:15,524 INFO L225 Difference]: With dead ends: 998 [2021-11-19 14:02:15,524 INFO L226 Difference]: Without dead ends: 562 [2021-11-19 14:02:15,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:02:15,530 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 118 mSDsluCounter, 3258 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 3828 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:15,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 3828 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 404 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2021-11-19 14:02:15,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-11-19 14:02:15,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 560. [2021-11-19 14:02:15,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 357 states have (on average 1.2352941176470589) internal successors, (441), 362 states have internal predecessors, (441), 165 states have call successors, (165), 32 states have call predecessors, (165), 36 states have return successors, (222), 166 states have call predecessors, (222), 163 states have call successors, (222) [2021-11-19 14:02:15,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 828 transitions. [2021-11-19 14:02:15,573 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 828 transitions. Word has length 207 [2021-11-19 14:02:15,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:15,574 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 828 transitions. [2021-11-19 14:02:15,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.428571428571429) internal successors, (94), 8 states have internal predecessors, (94), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 5 states have call successors, (26) [2021-11-19 14:02:15,574 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 828 transitions. [2021-11-19 14:02:15,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-19 14:02:15,577 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:15,577 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:02:15,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:02:15,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:02:15,803 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:02:15,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:15,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1706346939, now seen corresponding path program 2 times [2021-11-19 14:02:15,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:02:15,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1114277419] [2021-11-19 14:02:15,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:02:15,807 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:02:15,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:02:15,809 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:02:15,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 14:02:24,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:02:24,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:02:24,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:02:24,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:25,627 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-11-19 14:02:25,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:27,174 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2021-11-19 14:02:27,175 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:02:27,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1114277419] [2021-11-19 14:02:27,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1114277419] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:27,175 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:27,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-11-19 14:02:27,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975439674] [2021-11-19 14:02:27,175 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:27,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:02:27,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:02:27,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:02:27,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:02:27,178 INFO L87 Difference]: Start difference. First operand 560 states and 828 transitions. Second operand has 9 states, 8 states have (on average 12.0) internal successors, (96), 9 states have internal predecessors, (96), 6 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 5 states have call predecessors, (33), 6 states have call successors, (33) [2021-11-19 14:02:30,238 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:02:31,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:31,790 INFO L93 Difference]: Finished difference Result 1032 states and 1575 transitions. [2021-11-19 14:02:31,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:02:31,791 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.0) internal successors, (96), 9 states have internal predecessors, (96), 6 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 5 states have call predecessors, (33), 6 states have call successors, (33) Word has length 222 [2021-11-19 14:02:31,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:31,800 INFO L225 Difference]: With dead ends: 1032 [2021-11-19 14:02:31,800 INFO L226 Difference]: Without dead ends: 568 [2021-11-19 14:02:31,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:02:31,806 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 115 mSDsluCounter, 2780 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 3366 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:31,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 3366 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 298 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2021-11-19 14:02:31,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-11-19 14:02:31,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 560. [2021-11-19 14:02:31,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 357 states have (on average 1.2352941176470589) internal successors, (441), 362 states have internal predecessors, (441), 165 states have call successors, (165), 32 states have call predecessors, (165), 36 states have return successors, (222), 166 states have call predecessors, (222), 163 states have call successors, (222) [2021-11-19 14:02:31,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 828 transitions. [2021-11-19 14:02:31,848 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 828 transitions. Word has length 222 [2021-11-19 14:02:31,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:31,849 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 828 transitions. [2021-11-19 14:02:31,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.0) internal successors, (96), 9 states have internal predecessors, (96), 6 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 5 states have call predecessors, (33), 6 states have call successors, (33) [2021-11-19 14:02:31,850 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 828 transitions. [2021-11-19 14:02:31,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-19 14:02:31,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:31,853 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:02:31,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 14:02:32,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:02:32,068 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:02:32,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:32,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1881400440, now seen corresponding path program 1 times [2021-11-19 14:02:32,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:02:32,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429203718] [2021-11-19 14:02:32,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:32,070 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:02:32,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:02:32,071 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:02:32,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 14:02:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:34,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 1780 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:02:34,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:35,601 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2021-11-19 14:02:35,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:37,634 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2021-11-19 14:02:37,634 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:02:37,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429203718] [2021-11-19 14:02:37,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429203718] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:02:37,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:02:37,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 12 [2021-11-19 14:02:37,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924019247] [2021-11-19 14:02:37,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:37,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:02:37,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:02:37,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:02:37,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:02:37,637 INFO L87 Difference]: Start difference. First operand 560 states and 828 transitions. Second operand has 9 states, 8 states have (on average 13.125) internal successors, (105), 9 states have internal predecessors, (105), 6 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 6 states have call successors, (27) [2021-11-19 14:02:41,889 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:02:44,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:44,697 INFO L93 Difference]: Finished difference Result 1026 states and 1546 transitions. [2021-11-19 14:02:44,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:02:44,698 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 13.125) internal successors, (105), 9 states have internal predecessors, (105), 6 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 6 states have call successors, (27) Word has length 238 [2021-11-19 14:02:44,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:44,705 INFO L225 Difference]: With dead ends: 1026 [2021-11-19 14:02:44,705 INFO L226 Difference]: Without dead ends: 562 [2021-11-19 14:02:44,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:02:44,711 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 161 mSDsluCounter, 3796 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 4367 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:44,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 4367 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 648 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2021-11-19 14:02:44,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-11-19 14:02:44,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 530. [2021-11-19 14:02:44,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 329 states have (on average 1.2310030395136777) internal successors, (405), 334 states have internal predecessors, (405), 164 states have call successors, (164), 32 states have call predecessors, (164), 35 states have return successors, (207), 164 states have call predecessors, (207), 162 states have call successors, (207) [2021-11-19 14:02:44,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 776 transitions. [2021-11-19 14:02:44,748 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 776 transitions. Word has length 238 [2021-11-19 14:02:44,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:44,749 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 776 transitions. [2021-11-19 14:02:44,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 13.125) internal successors, (105), 9 states have internal predecessors, (105), 6 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 6 states have call successors, (27) [2021-11-19 14:02:44,749 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 776 transitions. [2021-11-19 14:02:44,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-11-19 14:02:44,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:44,752 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:02:44,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 14:02:44,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:02:44,968 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:02:44,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:44,968 INFO L85 PathProgramCache]: Analyzing trace with hash -2073342888, now seen corresponding path program 2 times [2021-11-19 14:02:44,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:02:44,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971139284] [2021-11-19 14:02:44,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:02:44,971 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:02:44,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:02:44,972 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:02:44,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 14:02:53,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:02:53,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:02:53,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:02:53,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:54,846 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2021-11-19 14:02:54,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:56,490 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2021-11-19 14:02:56,490 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:02:56,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971139284] [2021-11-19 14:02:56,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971139284] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:56,491 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:56,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2021-11-19 14:02:56,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906457298] [2021-11-19 14:02:56,492 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:56,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:02:56,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:02:56,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:02:56,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:02:56,494 INFO L87 Difference]: Start difference. First operand 530 states and 776 transitions. Second operand has 13 states, 13 states have (on average 8.153846153846153) internal successors, (106), 11 states have internal predecessors, (106), 8 states have call successors, (44), 4 states have call predecessors, (44), 2 states have return successors, (41), 8 states have call predecessors, (41), 7 states have call successors, (41) [2021-11-19 14:02:59,445 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:03:01,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:01,148 INFO L93 Difference]: Finished difference Result 970 states and 1441 transitions. [2021-11-19 14:03:01,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:03:01,149 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.153846153846153) internal successors, (106), 11 states have internal predecessors, (106), 8 states have call successors, (44), 4 states have call predecessors, (44), 2 states have return successors, (41), 8 states have call predecessors, (41), 7 states have call successors, (41) Word has length 253 [2021-11-19 14:03:01,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:01,154 INFO L225 Difference]: With dead ends: 970 [2021-11-19 14:03:01,155 INFO L226 Difference]: Without dead ends: 542 [2021-11-19 14:03:01,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:03:01,158 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 103 mSDsluCounter, 3973 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 4559 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:01,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 4559 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 337 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2021-11-19 14:03:01,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-11-19 14:03:01,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2021-11-19 14:03:01,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 335 states have (on average 1.2298507462686568) internal successors, (412), 340 states have internal predecessors, (412), 169 states have call successors, (169), 33 states have call predecessors, (169), 36 states have return successors, (212), 169 states have call predecessors, (212), 167 states have call successors, (212) [2021-11-19 14:03:01,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 793 transitions. [2021-11-19 14:03:01,200 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 793 transitions. Word has length 253 [2021-11-19 14:03:01,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:01,201 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 793 transitions. [2021-11-19 14:03:01,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.153846153846153) internal successors, (106), 11 states have internal predecessors, (106), 8 states have call successors, (44), 4 states have call predecessors, (44), 2 states have return successors, (41), 8 states have call predecessors, (41), 7 states have call successors, (41) [2021-11-19 14:03:01,202 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 793 transitions. [2021-11-19 14:03:01,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-11-19 14:03:01,205 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:01,206 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:03:01,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 14:03:01,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:03:01,424 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:03:01,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:01,425 INFO L85 PathProgramCache]: Analyzing trace with hash -669863688, now seen corresponding path program 1 times [2021-11-19 14:03:01,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:03:01,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083698580] [2021-11-19 14:03:01,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:01,428 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:03:01,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:03:01,429 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:03:01,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 14:03:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:07,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 2020 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-19 14:03:07,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:03:09,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2021-11-19 14:03:09,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-19 14:03:10,725 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2021-11-19 14:03:10,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:05:30,636 WARN L227 SmtUtils]: Spent 2.31m on a formula simplification. DAG size of input: 72 DAG size of output: 64 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-19 14:05:34,750 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:05:34,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-19 14:05:34,841 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-19 14:05:34,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-19 14:05:35,278 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 9 proven. 50 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-11-19 14:05:35,278 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:05:35,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083698580] [2021-11-19 14:05:35,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1083698580] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:05:35,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:05:35,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [10] total 17 [2021-11-19 14:05:35,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625939982] [2021-11-19 14:05:35,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:05:35,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 14:05:35,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:05:35,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 14:05:35,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:05:35,280 INFO L87 Difference]: Start difference. First operand 542 states and 793 transitions. Second operand has 14 states, 13 states have (on average 9.076923076923077) internal successors, (118), 14 states have internal predecessors, (118), 7 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2021-11-19 14:05:42,997 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:05:45,482 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:05:52,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:52,431 INFO L93 Difference]: Finished difference Result 1107 states and 1694 transitions. [2021-11-19 14:05:52,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 14:05:52,433 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.076923076923077) internal successors, (118), 14 states have internal predecessors, (118), 7 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) Word has length 283 [2021-11-19 14:05:52,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:52,440 INFO L225 Difference]: With dead ends: 1107 [2021-11-19 14:05:52,440 INFO L226 Difference]: Without dead ends: 606 [2021-11-19 14:05:52,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2021-11-19 14:05:52,445 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 110 mSDsluCounter, 5510 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 18 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 6089 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:52,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 6089 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1300 Invalid, 2 Unknown, 0 Unchecked, 14.8s Time] [2021-11-19 14:05:52,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-11-19 14:05:52,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 568. [2021-11-19 14:05:52,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 359 states have (on average 1.2367688022284122) internal successors, (444), 364 states have internal predecessors, (444), 169 states have call successors, (169), 33 states have call predecessors, (169), 38 states have return successors, (231), 171 states have call predecessors, (231), 167 states have call successors, (231) [2021-11-19 14:05:52,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 844 transitions. [2021-11-19 14:05:52,526 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 844 transitions. Word has length 283 [2021-11-19 14:05:52,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:52,527 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 844 transitions. [2021-11-19 14:05:52,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.076923076923077) internal successors, (118), 14 states have internal predecessors, (118), 7 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2021-11-19 14:05:52,528 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 844 transitions. [2021-11-19 14:05:52,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-11-19 14:05:52,531 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:52,532 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:05:52,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 14:05:52,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:05:52,755 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:05:52,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:52,757 INFO L85 PathProgramCache]: Analyzing trace with hash -575082312, now seen corresponding path program 1 times [2021-11-19 14:05:52,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:05:52,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [786604836] [2021-11-19 14:05:52,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:52,761 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:05:52,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:05:52,763 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:05:52,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 14:05:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:05:54,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 2014 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:05:54,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:05:56,288 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2021-11-19 14:05:56,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:05:57,496 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 5 proven. 34 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2021-11-19 14:05:57,497 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:05:57,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [786604836] [2021-11-19 14:05:57,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [786604836] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:05:57,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:05:57,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-19 14:05:57,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284502531] [2021-11-19 14:05:57,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:05:57,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:05:57,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:05:57,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:05:57,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:05:57,505 INFO L87 Difference]: Start difference. First operand 568 states and 844 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 14:05:57,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:05:57,726 INFO L93 Difference]: Finished difference Result 1106 states and 1731 transitions. [2021-11-19 14:05:57,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:05:57,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 283 [2021-11-19 14:05:57,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:05:57,736 INFO L225 Difference]: With dead ends: 1106 [2021-11-19 14:05:57,737 INFO L226 Difference]: Without dead ends: 574 [2021-11-19 14:05:57,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 563 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:05:57,745 INFO L933 BasicCegarLoop]: 627 mSDtfsCounter, 7 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:05:57,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1861 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:05:57,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-11-19 14:05:57,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 568. [2021-11-19 14:05:57,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 359 states have (on average 1.2311977715877438) internal successors, (442), 364 states have internal predecessors, (442), 169 states have call successors, (169), 33 states have call predecessors, (169), 38 states have return successors, (231), 171 states have call predecessors, (231), 167 states have call successors, (231) [2021-11-19 14:05:57,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 842 transitions. [2021-11-19 14:05:57,791 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 842 transitions. Word has length 283 [2021-11-19 14:05:57,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:05:57,792 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 842 transitions. [2021-11-19 14:05:57,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 14:05:57,792 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 842 transitions. [2021-11-19 14:05:57,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2021-11-19 14:05:57,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:05:57,796 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:05:57,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 14:05:58,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:05:58,018 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:05:58,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:05:58,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1640937912, now seen corresponding path program 1 times [2021-11-19 14:05:58,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:05:58,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884704139] [2021-11-19 14:05:58,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:05:58,033 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:05:58,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:05:58,035 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:05:58,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 14:06:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:00,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 2042 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:06:00,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:06:01,995 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 252 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-11-19 14:06:01,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:06:03,233 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2021-11-19 14:06:03,234 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:06:03,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884704139] [2021-11-19 14:06:03,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884704139] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:06:03,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:06:03,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-19 14:06:03,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089114952] [2021-11-19 14:06:03,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:03,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:06:03,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:06:03,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:06:03,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:06:03,237 INFO L87 Difference]: Start difference. First operand 568 states and 842 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-19 14:06:03,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:03,539 INFO L93 Difference]: Finished difference Result 1083 states and 1663 transitions. [2021-11-19 14:06:03,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:06:03,540 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 291 [2021-11-19 14:06:03,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:03,548 INFO L225 Difference]: With dead ends: 1083 [2021-11-19 14:06:03,548 INFO L226 Difference]: Without dead ends: 573 [2021-11-19 14:06:03,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 576 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:06:03,554 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 7 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1839 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:03,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1839 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:06:03,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-11-19 14:06:03,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 569. [2021-11-19 14:06:03,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 360 states have (on average 1.2305555555555556) internal successors, (443), 365 states have internal predecessors, (443), 169 states have call successors, (169), 33 states have call predecessors, (169), 38 states have return successors, (231), 171 states have call predecessors, (231), 167 states have call successors, (231) [2021-11-19 14:06:03,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 843 transitions. [2021-11-19 14:06:03,598 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 843 transitions. Word has length 291 [2021-11-19 14:06:03,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:03,599 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 843 transitions. [2021-11-19 14:06:03,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-19 14:06:03,600 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 843 transitions. [2021-11-19 14:06:03,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2021-11-19 14:06:03,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:03,604 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:03,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 14:06:03,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:06:03,819 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:06:03,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:03,820 INFO L85 PathProgramCache]: Analyzing trace with hash 129001201, now seen corresponding path program 1 times [2021-11-19 14:06:03,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:06:03,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [743735351] [2021-11-19 14:06:03,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:03,824 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:06:03,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:06:03,826 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:06:03,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 14:06:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:06,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 2044 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:06:06,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:06:07,837 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 277 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-11-19 14:06:07,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:06:09,566 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2021-11-19 14:06:09,566 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:06:09,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [743735351] [2021-11-19 14:06:09,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [743735351] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:06:09,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:06:09,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 11 [2021-11-19 14:06:09,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801015307] [2021-11-19 14:06:09,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:09,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:06:09,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:06:09,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:06:09,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:06:09,570 INFO L87 Difference]: Start difference. First operand 569 states and 843 transitions. Second operand has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 8 states have internal predecessors, (123), 3 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-19 14:06:12,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:12,414 INFO L93 Difference]: Finished difference Result 1091 states and 1664 transitions. [2021-11-19 14:06:12,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:06:12,415 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 8 states have internal predecessors, (123), 3 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) Word has length 291 [2021-11-19 14:06:12,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:12,441 INFO L225 Difference]: With dead ends: 1091 [2021-11-19 14:06:12,441 INFO L226 Difference]: Without dead ends: 583 [2021-11-19 14:06:12,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:06:12,446 INFO L933 BasicCegarLoop]: 601 mSDtfsCounter, 4 mSDsluCounter, 4711 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 5312 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:12,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 5312 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-19 14:06:12,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-11-19 14:06:12,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 576. [2021-11-19 14:06:12,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 365 states have (on average 1.2273972602739727) internal successors, (448), 371 states have internal predecessors, (448), 169 states have call successors, (169), 33 states have call predecessors, (169), 40 states have return successors, (250), 172 states have call predecessors, (250), 167 states have call successors, (250) [2021-11-19 14:06:12,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 867 transitions. [2021-11-19 14:06:12,487 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 867 transitions. Word has length 291 [2021-11-19 14:06:12,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:12,488 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 867 transitions. [2021-11-19 14:06:12,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 8 states have internal predecessors, (123), 3 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-19 14:06:12,489 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 867 transitions. [2021-11-19 14:06:12,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-19 14:06:12,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:12,492 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:12,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-19 14:06:12,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:06:12,708 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:06:12,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:12,708 INFO L85 PathProgramCache]: Analyzing trace with hash 2062563256, now seen corresponding path program 1 times [2021-11-19 14:06:12,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:06:12,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1520795158] [2021-11-19 14:06:12,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:12,711 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:06:12,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:06:12,711 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:06:12,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 14:06:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:14,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 2034 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:06:14,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:06:16,517 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 237 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2021-11-19 14:06:16,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:06:17,926 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 6 proven. 40 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2021-11-19 14:06:17,926 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:06:17,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1520795158] [2021-11-19 14:06:17,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1520795158] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:06:17,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:06:17,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2021-11-19 14:06:17,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749413756] [2021-11-19 14:06:17,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:06:17,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:06:17,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:06:17,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:06:17,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:06:17,929 INFO L87 Difference]: Start difference. First operand 576 states and 867 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 14:06:21,953 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:06:23,976 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:06:26,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:06:26,516 INFO L93 Difference]: Finished difference Result 1130 states and 1816 transitions. [2021-11-19 14:06:26,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:06:26,521 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 287 [2021-11-19 14:06:26,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:06:26,528 INFO L225 Difference]: With dead ends: 1130 [2021-11-19 14:06:26,528 INFO L226 Difference]: Without dead ends: 590 [2021-11-19 14:06:26,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 568 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:06:26,536 INFO L933 BasicCegarLoop]: 633 mSDtfsCounter, 15 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2384 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:06:26,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 2384 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 176 Invalid, 2 Unknown, 0 Unchecked, 8.2s Time] [2021-11-19 14:06:26,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-11-19 14:06:26,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 578. [2021-11-19 14:06:26,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 367 states have (on average 1.2261580381471389) internal successors, (450), 373 states have internal predecessors, (450), 169 states have call successors, (169), 33 states have call predecessors, (169), 40 states have return successors, (250), 172 states have call predecessors, (250), 167 states have call successors, (250) [2021-11-19 14:06:26,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 869 transitions. [2021-11-19 14:06:26,584 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 869 transitions. Word has length 287 [2021-11-19 14:06:26,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:06:26,585 INFO L470 AbstractCegarLoop]: Abstraction has 578 states and 869 transitions. [2021-11-19 14:06:26,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 14:06:26,585 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 869 transitions. [2021-11-19 14:06:26,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-19 14:06:26,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:06:26,589 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:06:26,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-19 14:06:26,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:06:26,816 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:06:26,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:06:26,816 INFO L85 PathProgramCache]: Analyzing trace with hash 181413624, now seen corresponding path program 1 times [2021-11-19 14:06:26,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:06:26,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345708425] [2021-11-19 14:06:26,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:06:26,819 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:06:26,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:06:26,820 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:06:26,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45c8be40-4b06-4d87-aa1d-5a3e20840afc/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-19 14:06:34,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:06:34,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 2028 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-19 14:06:34,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:06:36,541 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-19 14:06:36,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 65 treesize of output 17 [2021-11-19 14:06:37,968 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-19 14:06:37,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:08:07,717 WARN L227 SmtUtils]: Spent 1.47m on a formula simplification. DAG size of input: 101 DAG size of output: 93 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-19 14:08:25,117 WARN L227 SmtUtils]: Spent 15.50s on a formula simplification. DAG size of input: 526 DAG size of output: 272 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 14:08:25,121 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-19 14:08:25,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 132 treesize of output 771